<template>
  <div>
    <button @click="isShow = !isShow">显示/隐藏</button>
    <transition-group name="hello" appear>
        <h1 v-show="!isShow" key="1">你好啊</h1>
        <h1 v-show="isShow" key="2">aaa</h1>
    </transition-group>
  </div>
</template>

<script>
    export default {
        name: 'Test',
        data(){
            return {
                isShow: true
            }
        },

    }
</script>

<style scoped>
    h1{
        background-color: orange;
    }
    /* 进入的起点 离开的终点*/
    .hello-enter, .hello-leave-to{
        transform: translateX(-100%);
    }

    .hello-enter-active, .hello-leave-active{
        transition: 0.5s linear;

    }

    /* 进入的终点 离开的起点*/
    .hello-enter-to, .hello-leave{
        transform: translateX(0);
    }
</style>